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參數(shù)資料
| 型號(hào)： | MC68EC030 |
| 廠商： | Motorola, Inc. |
| 英文描述： | Second-Generation 32-Bit Enhanced Embedded Controller |
| 中文描述： | 第二代32位增強(qiáng)型嵌入式控制器 |
| 文件頁(yè)數(shù)： | 20/36頁(yè) |
| 文件大?。?/td> | 392K |
| 代理商： | MC68EC030 |
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20
MC68EC030 TECHNICAL DATA
Go to: www.freescale.com
MOTOROLA
ELECTRICAL SPECIFICATIONS
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Supply Voltage
VCC
-0.3 to +7.0
-0.5 to +7.0
V
Input Voltage
Vin
V
Operating Temperature Range
Minimum Ambient Temperature
Maximum Ambient Temperature
TA
TA
Tstg
0
70
°
C
Storage Temperature Range
-55 to 150
°
C
THERMAL CHARACTERISTICS-- PGA PACKAGE
Characteristic
Symbol
Value Rating
Thermal Resistance - Plastic
Junction to Ambient
Junction to case
θ
JA
θ
JC
32
TBD
o
C/W
POWER CONSIDERATIONS
The average chip-junction temperature, TJ, in
o
C can be obtained from:
TJ=TA+(PD
θ
JA)
(1)
where:
TA
θ
JA
PD
PINT
PI/O
= Ambient Temperature,
o
C
= Package Thermal Resistance, Junction-to-Ambient,
o
C/W
= PINT + PI/O
= ICC
X
VCC, Watts — Chip Internal Power
= Power Dissipation on Input and Output Pins — User Determined
For most applications, PI/O<PINT and can be neglected.
The following is an approximate relationship between PD and TJ (if PI/O is neglected):
PD=K
÷
(TJ+273
o
C)
(2)
Solving Equations (1) and (2) for K gives:
K=PD (TA + 273
o
C) +
θ
JAPD
2
(3)
where K is a constant pertaining to the particular part. K can be determined from equation (3) by
measuring PD (at thermal equilibrium) for a known TA. Using this value of K, the values of PD and TJ can
be obtained by solving equations (1) and (2) iteratively for any value of TA.
The device contains circuitry to
protect the inputs against damage
due to high static voltages or
electric fields; however, normal
precautions should be taken to
avoid application of voltages higher
than maximum-rated voltages to
these
high-impedance
Tying
unused
appropriate logic voltage level (e.g.,
either GND or VCC) enhances
reliability of operation.
circuits.
to
inputs
the
F
Freescale Semiconductor, Inc.
n
.
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